tests/test-rebuildstate.t

localrepo: make it possible to pass multiple path elements to join and wjoin

This makes join and wjoin behave in the same way as os.path.join. That is, it
makes it possible to pass more than one path element to them.

Note that the first path element is still required, as it was before this patch,
and as is the case for os.path.join.

basic test for hg debugrebuildstate

  $ hg init repo
  $ cd repo

  $ touch foo bar
  $ hg ci -Am 'add foo bar'
  adding bar
  adding foo

  $ touch baz
  $ hg add baz
  $ hg rm bar

  $ hg debugrebuildstate

state dump after

  $ hg debugstate --nodates | sort
  n 644         -1 bar
  n 644         -1 foo

status

  $ hg st -A
  ! bar
  ? baz
  C foo

  $ cd ..